title: Theophylline effect upon respiration and ventilation in the dog: interaction with methadone.
mesh_terms: D000818:Animals; D002245:Carbon Dioxide; D002628:Chemoreceptor Cells / Q000187:drug effects; D004285:Dogs; D004347:Drug Interactions; D005260:Female; D008691:Methadone / Q000097:blood / Q000494:pharmacology*; D012119:Respiration / Q000187:drug effects*; D012129:Respiratory Function Tests; D013806:Theophylline / Q000097:blood / Q000494:pharmacology*
chemical_list: D002245:Carbon Dioxide; D013806:Theophylline; D008691:Methadone